Global model

Hello

In CI3 i have one model that i have used as my main model (he holds all config, useful functions, there was html title of the page and other stuff) in any other model, controller or even view i can call this model and use functions or set properties.

Now in CI4 i have problem with this. My question is: How to make one model that is visible under all models? Is there any solution to not to load my model any time when i want to use it ?
There is solution for one "main model" that is visible to all models?

Thank you for reply